linux-kernel - Re: [RFT] mtd: onenand: samsung: Fix iomem access with regular memcpy

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Message-Id: <20200109191450.10775-1-miquel.raynal@bootlin.com>
Date:   Thu,  9 Jan 2020 20:14:50 +0100
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Krzysztof Kozlowski <krzk@...nel.org>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org
Subject: Re: [RFT] mtd: onenand: samsung: Fix iomem access with regular memcpy

On Fri, 2020-01-03 at 16:41:58 UTC, Krzysztof Kozlowski wrote:
> The __iomem memory should be copied with memcpy_fromio.  This fixes
> Sparse warnings like:
> 
>     drivers/mtd/nand/onenand/samsung_mtd.c:678:40: warning: incorrect type in argument 2 (different address spaces)
>     drivers/mtd/nand/onenand/samsung_mtd.c:678:40:    expected void const *from
>     drivers/mtd/nand/onenand/samsung_mtd.c:678:40:    got void [noderef] <asn:2> *[assigned] p
>     drivers/mtd/nand/onenand/samsung_mtd.c:679:19: warning: incorrect type in assignment (different address spaces)
>     drivers/mtd/nand/onenand/samsung_mtd.c:679:19:    expected void [noderef] <asn:2> *[assigned] p
>     drivers/mtd/nand/onenand/samsung_mtd.c:679:19:    got unsigned char *
> 
> Reported-by: kbuild test robot <lkp@...el.com>
> Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>

Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git mtd/fixes, thanks.

Miquel